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Finding the Fourth Proportional to 262,139.60, 392,431.80 and 173,493.20

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Solution

The fourth proportional to 262,139.60, 392,431.80 and 173,493.20 is: 259,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,139.60 : 392,431.80 = 173,493.20 : x
  2. Step 2: Convert to fraction form
    262,139.60/392,431.80 = 173,493.20/x
  3. Step 3: Cross multiply
    262,139.60x = 392,431.80 × 173,493.20
  4. Step 4: Simplify right side
    262,139.60x = 68,084,248,763.76
  5. Step 5: Solve for x
    x = 68,084,248,763.76/262,139.60
  6. Step 6: Final answer
    x = 259,725.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.